Every year at the 25th of March, Greece celebrates the anniversary of the declaration of the start of Greek War of Independence from the Ottoman Empire, in 1821. The Greek War of Independence was waged between 1821 to 1832 and resulted to the successful independence of Greece from the Ottoman Empire.
The flag of Greece is officially recognized as a national symbol. It is rectangular flag with an aspect ratio of 2:3 and has 9 equal horizontal stripes of alternating blue and white. There is a blue square in the upper left corner which has a white cross in the center. The white cross symbolizes the Eastern Orthodox Christianity which is the established religion for the Greek people of Greece and Cyprus. It was officially adopted by the First National Assembly at Epidaurus on 13 January 1822.
You can buy this SAK from www.voyager-shop.gr.